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EPOXIDOVÁ ZALÉVACÍ pryskyřice typ MC622 W342 K58 pro zapouzdřování a zalévání v elektronice a elektrotechnice
Electrical Insulation
TECHNICAL DATA SHEET
EPOXIDOVÁ ZALÉVACÍ HMOTA
pag.1/3
thermosetting resins
Applications:
Resin                          Hardeners                      Mixing ratio by weight
MC 622                 W 342                        100:9
K 58                        100:9,5
Encapsulation of electrical components (transformers, electrical motors, submersible pumps, etc).
Processing:
Manual casting. Undervacuum casting.
Description:
Two components self-estinguishing filled epoxy system. Solvent and halogens free. Good electrical and mechanical properties. High thermal resistance in particular after post-curing at 80-90°C for W 342 and at 90-110°C for K 58. It is advisable to pre-heat the components at 35-40°C to improve the impregnation of the resin. Low exothermic peak. Very good heat dissipation.
SYSTEM SPECIFICATIONS
Resin
Viscosity at: Density at:
Hardener W 342
25°C 25°C
IO-10-50 IO-10-51 (ASTM D 1475)
mPas g/ml
25.000 45.000 1,78 1,82
Viscosity at:
25°C
IO-10-50
mPas
30 70
Resin
TYPICAL SYSTEM CHARACTERISTICS
Resin Colour
Yellow
Hardeners
W 342
K 58
Hardener Colour
Colourless
Colourless
Viscosity at: 25°C
IO-10-50
mPas
-
50 100
Density at: 25°C
IO-10-51 (ASTM D 1475)
g/ml
0,94 0,96
0,91 0,93
Processing Data
Mixing ratio by weight
for 100 g resin
g
100:9
100:9,5
Mixing ratio by volume
for 100 ml resin
ml
100:17
100:19
Pot life
(50mm;200ml)
IO-10-53 (*)
min
45 50
nd nd
Pot life (doubled initial viscosity)
40°C IO *
-10-50 ( )
min
13 18
20 25
Exothermic peak
(50mm;200ml)
IO-10-53 (*)
°C
60 70
35 40
Initial mixture viscosity at:
40°C
IO-10-50
mPas
1.200 1.800
1.000 1.600
Gelation time
40°C 100ml
IO-10-52b (UNI 8701)
min
42 55
80 90
Suggested curing cycles
(**)
2-4 h 40°C + 6-8 h 100°C
2-4 h 40°C + 6-8 h 100°C
Electrical Insulation
TECHNICAL DATA SHEET
pag.2/3
camattini spa thermosetting resins
MC 622
TYPICAL CURED SYSTEM PROPERTIES Properties determined on specimens cured: 2-4h 40°C + 6-8h 100°C
W 342
K 58
Surface
Density
Hardness
Glass transition (Tg)
Water absorption (24h RT) Water absorption (2h 100°C) Linear thermal expansion (Tg -10°C) Linear thermal expansion (Tg +10°C)
Flammability
Max recommended operating temperature
Thermal conductivity
Dielectric constant at:
Loss factor at:
Volume resistivity at:
Dielectric strength
Flexural strength Maximum strain Flexural elastic modulus Tensile strength Elongation at break
Semi-bright
Semi-bright
IO-10-54 (ASTM D 792)
g/ml
1,73
1,77
1,71
1,75
IO-10-58 (ASTM D 2240)
Shore D/15
86
88
87
89
IO-10-69 (ASTM D 3418)
°C
90
100
105
110
IO-10-70 (ASTM D 570)
%
0,10
0,15
0,10
0,20
IO-10-70 (ASTM D 570)
%
0,90
1,00
0,60
0,80
IO-10-71 (ASTM E 831)
10^-6/°C
38
46
38
46
IO-10-71 (ASTM E 831)
10^-6/°C
105
112
105
112
IO-10-68 (UL 94 V-0)
mm
4,0
4,0
IEC 60085 (***)
°C
180
180
IO-10-87 (ASTM C518)
W/(m°
1,20
1,30
1,25
1,35
IO-10-59 (ASTM D 150)
)
4,30
4,80
4,50
5,00
IO-10-59 (ASTM D 150)
x 10^-3
30
40
35
45
IO-10-60 (ASTM D 257)
Ohm x cm
3 x5
x 10^14
5 x8
x 10^14
IO-10-61 (ASTM D 149)
kV/mm
21
23
20
22
IO-10-66 (ASTM D 790)
MN/m˛
58
68
70
80
IO-10-66 (ASTM D 790)
%
0,8
1,2
0,8
1,2
IO-10-66 (ASTM D 790)
MN/m˛
7.500
8.500
9.000
10.000
IO-10-63 (ASTM D 638)
MN/m˛
25
35
35
45
IO-10-63 (ASTM D 638)
%
0,5
0,9
0,8
1,2
Electrical Insulation
TECHNICAL DATA SHEET
pag.3/3
thermosetting resins
MC 622
Instructions:
In pre-filled products it is a good practice to check and carefully rehomogenize the material if some settlement is present. Add the proper quantity of the hardener to the resin, mix carefully. Avoide air trapping. For some applications it can be useful pre-heat the components and/or carry on a dearation step under vacuum of the mixture before casting.
Post-curing
For room temperature curing system the post-curing allows the fast stabilization of the material and the obtainment of the best electrical and mechanical properties. For hot curing systems it is advisable to follow the indications reported in the present data sheet verifiyng the correctness for the components under development. During curing process it is advisable to avoid thermal variations higher than 10°C/hour.
Storage:
Filled epoxy resins and relative hardeners can be stored respectively for one year and two years in the original sealed containers stored in a cool and dry place. After that period, or if the material has been stocked in anomalous conditions, pre-filled resins can be settled down and their use is possible only if they are accurately re-homogenized with the help, if necessary, of a mechanical mixer. The hardeners are moisture sensitive therefore it is a good practice to close the vessel immediately after each use. Hardener K 58 may crystallize at low temperatures. To restore the original conditions, heat the material at 70-80°C avoiding local overheating. Before use, the product must be rehomogenized and cooled down at room temperature.
Handling precautions:
Refer to the safety data sheet and comply with regulations relating to industrial health and waste disposal.

DALŠÍ ZALÉVACÍ HMOTY

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